389933761

素因数分解:

$7^1\times {\mathrm{43}}^2\times {\mathrm{47}}^1\times {\mathrm{641}}^1$

素因数の和:781

約数の個数: 24

約数和(自身を含む): 466677504

約数和(自身を除く): 76743743

約数列:

[1, 7, 43, 47, 301, 329, 641, 1849, 2021, 4487, 12943, 14147, 27563, 30127, 86903, 192941, 210889, 608321, 1185209, 1295461, 8296463, 9068227, 55704823, 389933761]

約数ペア:

[(1, 389933761), (7, 55704823), (43, 9068227), (47, 8296463), (301, 1295461), (329, 1185209), (641, 608321), (1849, 210889), (2021, 192941), (4487, 86903), (12943, 30127), (14147, 27563)]